<nav class="navbar navbar-inverse  navbar-fixed">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-ex1-collapse">
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a href="#" class="navbar-brand">在线竞拍</a>
        </div>
        <div class="collapse navbar-collapse" id="navbar-ex1-collapse">
            <ul class="nav navbar-nav">
                <li><a href="#">关于我们</a></li>
                <li><a href="#">联系我们</a></li>
                <li><a href="#">网站地图</a></li>
            </ul>
        </div>
    </div>
</nav>

<!-- <nav class="navbar navbar-inverse navbar-static-top">
        <div class="container-fluid">
          <div class="navbar-header"> <button type="button" class="collapsed navbar-toggle" data-toggle="collapse"
              data-target="#bs-example-navbar-collapse-8" aria-expanded="false"> <span class="sr-only">Toggle navigation</span>
              <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a href="#"
              class="navbar-brand">在线竞拍</a> </div>
          <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-8">
            <ul class="nav navbar-nav">
              <li class="active"><a href="#">关于我们</a></li>
              <li><a href="#">联系我们</a></li>
              <li><a href="#">网站地图</a></li>
            </ul>
          </div>
        </div>
      </nav> -->